Frederick hammer



I'. HAMMER. T001. SUPPORT.

(No Model.)

No. 555,092. Patented Feb. 25, 1896.

lhvrrnn STATES ATENT OFFICE.

FREDERICK HAMMER, OF SENECA FALLS, NEW YORK, ASSGNOR TO THE SENECA FALLS MANUFACTURlNG COMPANY, OF SAME PLACE.

TOOL-SUPPORT.

SPECIFICATION forming part of Letters Patent No. 555,092, dated February 25, 1896.

Application tiled October 4, 1895. Serial No. 564,639. (No model.)

To all whom it may concern:

Be it known that l, FREDERICK HAMMER, of Seneca Falls, in the county of Seneca, in the State of New York, have invented new and useful Improvements in Tool-Supports, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

My invention relates to improvements in tool-supports for lathes, and has for its object the production of a simple and effective device which is economically manufactured, permits an accurate adjustment of the tool, and obviates transverse rockingthereof; and to this end it consists, essentially, in the general construction and arrangement of the collar encircling the tool-post and the shoe adjustably supported by said collar, all as hereinafter fully described and pointed out in the claims.

In describing this invention reference is had to the accompanying drawings, forming a part of this speciiication, in which like letters indicate corresponding parts in all the views.-

Figure l is an elevation of a tool-support embodying my invention, a tool-shank being shown in section as opera-tively secured thereto. Fig. 2 is an enlarged vertical section taken on line 2 2, Fig. l, the tool-shank being illustrated. Figs. 3 and a are isometric views of the detached collar and shoe for the toolpost, and Fig. 5 is an isometric view of amodified construction of collar for the tool-post.

A' represents the tool-block or other support 3 B, the tool-post; C, the collar encircling the tool-post, and D the shoe for engaging the shanl; of the tool E.

The tool-block or other support A is of any desirable form, size, and construction, and is provided with a top bearing-face, a.

The tool-post B, which is preferably formed substantially cylindrical, projects upwardly from the face o, and its lower end is detachably secured to the block or support A, being here illustrated as provided with an annular shoulder b, movable lengthwise in a groove a in said block or support A. The central portion of the tool-support B is provided with a perforation b of angular cross-section for the reception of the shank of the tool E, and

the lower end of a clamping-screw B extending lengthwise of the upper end of the post B is movable in the perforation b toward and away from the sha-nk of the tool E for securing the same in its adjusted position.

The collar C is of suitable form and size, and, as it preferably encircles the post B, it is formed with a central aperture c for receiving the tool-post. The lower face of the eollar C bears upon the top face, a, ofthe block or support A, and is preferably formed with separated substantially parallel bearing-faces c for engaging said face o. tends downwardly from the upper face of the collar C and is arranged substantially parallel with the bearing-faces c/ and between the vertical planes, as Z', Fig. l, of their adjacent sides. The groove c2 is aligned with the perforation b and is formed with a longitudinal conca-ve inner face, c3, and flat substantially parallel side faces, c4. A second groove c5 of less width than the groove c2 extends longi tudinally through the opposite ends of the face c3 and through diametrically-opposite portions of the outer peripheral face, c6, of the collar C. rlhebearing-faces c/ and the groove c5 permit the side faces, ct, to move toward the shoe D when the clamping-screw B is rmly engaged with the tool E; but it is obvious, however, that said bearing-faces and groove may be dispensed with, and at Fig. 5 l have shown a collar C1" unprom'ded with these parts.

The shoe D is arranged in the perforation b' and the groove c2, and is preferably formed of greater thickness than the depth of the groove c2, so that its upper face, d, projects above the corresponding face of the colla-r C. The upper face, d, of said shoe is preferably flat and is suitably corrugated or roughened for effectively engaging the lower face of the shank of the toolE. The lower face, d', of the shoe D is formed convex longitudinally and is of substantially the same curvature as the face cg of the groove c2, and the opposite side faces, d'2, of said shoe are formed iiat and are arranged substantially parallel for engaging the faces c4. The shoe D is readily and accurately adjusted lengthwise in the groove c2 for eecting the desired adjustment of the tool E, is obviously prevented from lateral A groove c2 eX- IOO movement, and is not liable to become disengaged from the collar C during its adjustment. Moreover, the collar C and the shoe D are simple in construction and economical in manufacture, and their peculiar construction prevents dirt, chips, &c., from entering and remaining between their adjacent faces.

The operation of my invention will be readily understood upon reference to the foregoing description and the accompanying drawings.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. rlhe combination of a tool-block, a toolpost projecting' upwardly from the top face of the tool-block, a collar encircling the toolpost and having its lower face engaged with the top face of the tool-block, said collar being formed with a transverse groove extending downwardly from its upper face and having' a longitudinally-concave inner face and substantially parallel side faces, and a second groove of less width than the former groove extending lengthwise through the opposite ends of the inner face of the former groove and through diametrically-opposite portions of the outer peripheral face of the collar, and a shoe arranged in the former groove and provided with a longitudinally convex lower face, and iiat substantially parallel side faces for engaging the inner and side faces of said groove, substantially as and for the purpose set forth.

2. The combination of a tool-block, a toolpost projecting upwardly from the top face of the tool-block, a collar encircling the toolpost and having' its lower .face provided with separated bearing-faces for engaging the top face of the tool-block, said collar bein g formed with a transverse groove extending downwardly fromV its upper face and arranged substantially parallel with the bearing-faces and between the vertical planes of their adjacent sides and having a lon gitudinally-concave inner face and substantially parallel side faces,

and a shoe arranged in the groove and provided with a longitudinally-con veX lower face, and fiat substantially parallel side faces for engaging the Iinner and side faces of said groove, substantially as and for the purpose specified.

3. The combination of a tool-block, a toolpost projecting upwardly from the top face of the tool-block and provided with a transverse perforation for the reception of the tool, a collar encircling the tool-post and having its lower face provided with separated bearing-faces for engaging the top face of the toolbloclr, said collar being formed with a transverse groove extending downwardly from its upper face and arranged substantially parallel with the bearing-faces and between the vertical planes of their adjacent sides, said groove being aligned with the perforation in the tool-post and having a longitudinally-concave inner face and substantially parallel side faces, a second groove of less width than the former groove extending lengthwise through the opposite ends ofthe inner face of the former groove and through'diametrically-opposite portions of the outer peripheral face of thecollar, a shoe arranged in the perforation andthe former groove and formed of greater thickness than the depth of said former groove'and provided with a longitudinally-convex lower face and iiat substantially parallel side faces for engaging the inner and side faces of said former groove, and a clamping-screw extending lengthwise of the post and having one end movable Vinto said aperture toward and away from the shoe, substantially as and for the purpose described.

In testimony whereof I have hereunto signed my name, in the presence of two attesting witnesses, at Seneca Falls, in the county of Seneca, in the State of New York, this lst day of August, 1895.

FREDERICK HAMMER. lVitnesses:

HENRY M. DARLING, ADELBERT S. DAvis. 

